time

a

b

c

R2

Apr.

-194.41

0.1344

-0.000021

0.965

May

-345.24

0.2386

-0.000037

0.969

Jun.

-1411.6

0.9756

-0.000151

0.968

Jul.

-1120.7

0.7745

-0.000120

0.968

Aug.

-504.77

0.3489

-0.000054

0.967

Sep.

-545.41

0.3770

-0.000059

0.967
Table 1: Monthly regression coefficients and R2 needed to calculate monthly mean precipitation using altitude (H) for Pailugou catchment (P = a + bH+cH2).